Finding the Fourth Proportional to 120,077,578.08, 165,707,199.42 and 65,073,434.58

Step by Step Solution

1. Step 1: Write the proportion equation
   120,077,578.08 : 165,707,199.42 = 65,073,434.58 : x
2. Step 2: Convert to fraction form
   120,077,578.08/165,707,199.42 = 65,073,434.58/x
3. Step 3: Cross multiply
   120,077,578.08x = 165,707,199.42 × 65,073,434.58
4. Step 4: Simplify right side
   120,077,578.08x = 10,783,136,600,892,382
5. Step 5: Solve for x
   x = 10,783,136,600,892,382/120,077,578.08
6. Step 6: Final answer
   x = 89,801,416.50